Speed-controlling system.



No. 813,201; v PATENTED FEB. 20, 1906;

- A.,L. DE LEEUW.

SPEED CONTROLLING SYSTEM.

APPLICATION FILED AUGHT, 1905. Y

I V I 2 SHEETS-SHEET 1.

Witnesses am 3, L9, Wlnventor (R 1 W w m. s W- [n W I Attorney No. 813,201. 'PATENTED FEB. 20, 1906. A. L. DB LEEUW.

SPEED CONTROLLING SYSTEM.

APPLICATION FILED AUGHI, 1905. I

2 SHEETS-SHEET 2.

v Inventor PJJZ Attorney Witnesses ADOLPH L. DE LEEUW, OF HAMILTON, OHIO.

SPEED-CONTROLLING SYSTEM.

Specification of Letters Patent.

Patented Feb. 20, 1908.

Application filed August 7,1905. Serial No. 272,991.

from the followir g description, taken in con-- nection with the accompanying drawings, in

which contro Fi ure 1 is a side elevation of an ordinary meta -planer having added thereto a speedling mechanism exemplifying my invention; Fig. 2, a side elevation of the added mechanism in conjunction with certain of the ordinary parts of the planer; Fig. 3, an end elevation of the same, ard Fig. 4 a diagram illustrating the typical electrical connectiors for the system.

In the drawings, 1 indicates the bed of an ordinary metal-planer; 2, the table; 3, the housings 4, the planer-pulley of the cuttir gbelt; 5, the planer-pulley of the backing-belt 6, the pulley-shaft of the planer 7, the counter-shaft 8, the cuttin g-pulley of the countershaft; 9, the backing-pulley of the counter shaft; 10, the cuttirg-belt; 11, the backin belt; 12, the electric motor; 13, the belt from the motor to the counter-shaft; 14, the starting-box of the motor; 15, the belt-shifter of the planer; 16, the reversing-tumbler; 17, the shifter-rod connectitg the tumbler with the belt-shifter; 18, the cutting-dog or that one of the planer-dogs which, acting at the end of the backing motion, operates the tumbler and initiates the cutting stroke, and 19 the backing-dog.

All of the parts thus .far referred to are as usual in metal-planers, and it may be further said that all these parts may be subject to any of the usual variations or modifications without materially 'aifecti11g my automatic speed controlling system, which may be viewed as supplemental to ordinary planer construction. I

The parts thus far referred. to operate in precisely the usual manner, and at this point it will be pro er to consider the speed effects available in i own constructions.

It will be observed that the proportioning of pulleys is such as to bringlabout the usua superior-backing speed for t e table, and the proportioning of the backing speed to the cutting speed may be as usual and subject to the usual variations in design, dependent largely upon the size of the machine and the general character of the work to be done. As the backin motion is a non-productive one and represents a comparative waste of time.

it is customary to provide for as high a back iizg speed as is practicable in view of the weight of the table and its work and the limitations to quick reversal of motion. The relation of backing speed to cutting speed having been fixed in the proportioning of the driving mechanism, that proportioningremains fixed, no matter what variations may be made in the cutting speed. In other Words, assuming the backing speed to the cutting speed to be as four to one that proportioning holds good Whether the cutting be done fast'or slow, unless recourse be had to inconvenient change-gears or to independent motors for producing the cutting and the backing motion. The backing speed of a planer should be founded on considerations of weight of table and work regardless of whether the work be hard or soft, while the cutting speed should be founded on consider itlJiOTZS of hardness or softness regardless of whether the work be light or heavy, for in ordinary planer operations it will be found that in most all cases the cutting speeds for tools are Within any limiting conditions imposed by weight of parts to be moved or reversed. I

By means of my system to be described I control the cutting speed andthe' backing speed quite independently of each other and without any necessary modifications of the speed pro ortioning arranged for in the design of t e usual transmitting apparatus. While my system well lends itself to original incorporation into the mechanism of a planer designed with special reference to its employment, it also lends itself to constructions representing a mere supplement tothe ordinary.

mechanism of the planer, and it is in this latter form that the system is illustrated in the exemplification.

Proceeding with the drawings, 20 indicates a rheostat of ordinary form for varying the speed of the motor and typifying motor-controlling devices generally; 21, the rheostatarm '22 the usual stop for the rheostat-arm, the arm being illustrated as in the maximumspeed position as reached by the movement front and t e rear of the rac at the right of the reversing-tumbler; 27, a pawl'carried by cuttin dog 18 in a lane to the rear of rack an adapted as t e-cutting-dog moves to the left to engage lug 26 and push the rack to I the left; 28, a in projectin rearward from pawl 27; 29, a ed cam in t e path of in 28 and adapted as dog 18 moves to the eft to disengage pawl 27 from lug 26 and permit the rack to come to rest; 30, a second pawl carried b cuttin -do 18 in a lane to. the front of rac 25 an adapted as the dog moves to the right to engage lug 26 and push the rack to the ri ht; 31, a pin projecting forward from paw 30, and 32 a cam to the right of lug 26 and in the path of pin 31 and adapted as the dog moves to the I ht and pushes the rack with it to release pawI30 from lug 26.

In Fig. 2 assume the table to be moving in the direction of its arrow-that is to say-it is near the completion of its backing stroke, the reversing-tumbler 16 being in the position in whic it was left b the backing-dog '19 at the beginnin of the liackin stroke. It is to be observed t at arm 21 of t e rheostat is in its highest-speed position, the consequence being that the motor is moving at maximum speed and the table backing at maximums eed.

The continued backing of the table eventually causes pawl 27 to enga e lug 26,where upon rack 25 moves to the le t and the rheostat-arm moves progressively to slower motor positions, eventually reaching, say, the rheostat position corresponding wit minimum motor speed. At this time pin 28 engages fixed cam 29, whereupon pawl 27 disengages from lug 26, the rheostat-arm then coming to-rest at position corresponding with minimum motor speed. The table continues'its backing motion, but has been slowed down to the minimum, and at this time dog 18 attacks the reversing-tumbler and reverses the table motion in the usual manner, this reversal obviously taking place under those favorable conditions represented by slow motor speed The table motion having been reversed under these favorable slow conditions, the cutting stroke begins at. the low speed.

Soonafter the reversal has taken place the pawl 30 engages lug 26 and moves rack 25' to the right, thus progresrheostat-arm agam to sively readjustingthe w high-speed position. At the time this s accomplished pin 31 engages cam 32, thus releasing pawl 30 from the rack and leaving the rheostat in :gh-speed condition, the ta:

ble now proceeding on its cutting stroke at I position.

high speed. For thepresent no attention need be given to any special performance on the part of the backing-dog 19. Cam 29 may be and is illustrated as a fixed cam, its duty being to disconnect the dog from the rheovstat after the rheostat has been adjusted to minimum-speed position, theusualreversal of the planer motion taking effect after this slow-speed'condition has been obtained. Cam 32 is illustrated as in a position to release the dog from the rheostat only after the rheostat has been adjusted to maximumspeed position. This represents the extreme of backin speed; but cam 32 is adjustable to the %eft, having screw-and-slot connection with its support. It is shown in its extreme rightward position. Its support is shown as being provided with five graduations. If now cam 32 be secured in some leftward position, it would manifestly cause dog 18 when it is connected to the rheostat and speeding up the motor to become disengaged from the rheostat when the rheostat-arm reaches some intermediate speed Unden these conditions the cutting also, having been installed at minimum speed, continues at the speed corresponding with the adjustment of cam 32. It is therefore seen that by adjusting cam 32 the cutting s eed may be as desired within the rheostat limits, the cutting motion of the table,

however, always being initiated at low speed.

In the illustration the rheostat is illustrated as having the usual great multiplicity of contact-points for the arm; but no such refinement of selection need be considered in adjusting cam 32.

The apparatus thus far described provides only for reversal at slow speed at the end of the backing stroke and for selective speeds for the cutting stroke after the cutting stroke has been initiated; but there is-a second rack 33, engaging the pinion 23, and as complementary to this rack the backing-dog 19 is equi ped with its pair of pawls, and there is a fixe cam for one pawl and an adustable cam for the other pawl. The rheostat action is therefore the same at the end of the cutting stroke as has been described inconnection with the backing stroke. The two adjustable cams being, quitev independent of IIO each other permit the cutting-dog to adjust t e rheostat and then after the reversal of the laner has been effected at si'ow speed readusting the rheostat for desired speed. By

1 means of this system the planer may 0 erate at any point within the rheostat con itions and may cut at high motor speed while back- 3' speed ,while. backing at high motor speed,

at low motor speed or cut at low motor.

thus accomplishing results not before attainable without the employment of change- .gearing or a lurality of motors.

tor, the motor being an ordinary continucation of my improved speed-controlling sys- I ously-r'unning non-reversing one. The rheostat 20, controlled by the laner-dogs, varies the strength of the niotorield 34. j i

'It is to be understood that the metal-planing machine is simply chosen as an exemplifi tem. This exemplificatlon hasbeen selected,

as it presents peculiarly complicated and embarrassing conditions serving well to illustrate the vcapacit of my system, which it is obvious ma wel lend-itself to quite a variety of mac ines capable of utilizing its merits to a greater orless degree.

I claim as my invention- 1. In a speed-controlling system, the combination, substantially. as set forth, of a machine having a part to be moved at differing.

rates of speed, a continuously-running motor for driving the machine part, transmitting connections between the motor and the machine part, a controller for varying the speed of the motor, and connections between the controller and a moving part of the machine for causing the movement of said part to automatically adjust the controller and effect variations in the speed of the continuously: running motor. a

2. The combination, substantially as set forth, with a machine provided with automatic reversing mechanlsm, a motor running continuouslyin one direction for actuating the machine, transmitting mechanism between the motor and the machine, a controller for varying the speed of the motor, and connections between the controller and a moving part of the machine, of means for causing said connections to effect an adjustment of the controller at each reversal of the machine, whereby the speed of the continuously-runnin motor and the machine may differ u on the forward and backing strokes of the p aner.

3. The combination, substantially as set forth, with a machine provided with automatic reversing mechamsm, a motor running continuously in one direction for actuating the machine, transmitting mechanism between the motor and the machine, a controller for varying the speedjof the motor, and .connections between the controller and a moving art of the machine, of means for causing aid connections to adjust the coneach reversal of the motion of said troller in the motor-slowing direction before and in the motor-quickening direction after each reversal whereby the continuously-rum ning motor causes the machine to reduce its rate of motion prior to and increase itsrate of motion subsequent to each reversal.

4. The combination, substantially as set forth, with a machine rovided with automatic reversing mechanism, a motor runn ng continuously in one direction for actuating the machine, transmittin mechanism between the motor and the p anerfarranged to cause a givenspeed of the motor to give to the machine a backing s eed in excess of its forward speed, a contro ler for varying the. s eed of the motor, and connections between t e controller and a part of the machine, of means for causin said connections to effect an adjustment 0 the controller at each reversal of the machine, whereby the speed of the continuously-running motor and the machine may differ upon the forward and backing strokes.

5. The combination, substantially as set forth, with a reciprocating machine provided with an automatic reversing mechanism, a motor running continuously in one direction for actuating the planer, transmittin mechanism between the motor and the p aner, a I

controller for varying the speed of the motor, and mechanism connected with the controller for adjustin it, of means connected with said control er-adjusting mechanism. and

adapted to be engaged by dogs on a reciprocating part'of the machine before and after art;

, v6. The combination, substantia l forth, with a planing-machine provi ed with automatic reversing mechanism," a motor running continuously in one direction for acas set I tuating the planer, transmitting mechanism between the motor and the laner, a controller for varying the speed 0 the motor,and

connections from the controller for adjusting it, of means whereby the planer-dogs enga' e with and disengage from said controller-a jus-ting mechanism prior to the reversal of table motion, and means for causing the planer dogs to engagewith and disengage from said controller-adjusting mechanism subsequent to the reversal of table motion? 7. The combination, substantially as set forth, with a planing-machine provided with automatic reversing mechanism, a'm'otor running continuously in one direction for actuating the planer, transmitting mechanism between the motor and the laner, a controller for varying the speed .0 the motor, and

connections from the controllerv for ad listing it, of means for causing the planer: ogs t0. enga c with and disengage from said contrbller-a justipg mechanism prior to a'nd'a ain subsequen to the reversal of table motlon, and means for variably adjusting the time of disengagement of the dogs from said controller-adjusting mechanism after the reversal of the table motion.

8. The combination, substantially as set forth, with a planing-machine provided with automatic reversing mechanism, a motor running continuously in one direction for actuiating the planer, transmitting mechanism between the motor and the planer, a controller for varying the speed of the motor, and connections from the controller for adjusting it, of means for causing the planerdogs to engage with and disengage from said controllerad usting mechanism prior to and again subsequent to the reversal of table-motion, and means for variably adjusting the time of disengagement of the dogs fromsaid controllerad usting mechanism after the reversal of the table motion, said variable adjusting means being independent as regards each dog, whereby the release of each dog from the controlleradjusting mechanism after the reversal of table motion may occur under selected conditions independent of the corresponding adjustment for the other dog.

9. The combination, substantially as set forth, with a planing-machine provided with automatic reversing mechanism, a motor running continuously in one direction for actuating the planer, transmitting mechanism between the motor and the laner, a contmller for varying the speed of the motor, and connections between the controller and a part of the planer moving in unison with its table, of

- means incorporated insaid connections whereby a planer-dog will adjust the controller to motor-slowing position, then effect the reversa-l of the table motion and then adjust the controller to motor- -quickening position.

10. The combination, substantially as set forth, with a planing-machine provided with automatic reversing mechanism, a motor running continuously in one direction for actuating the planer, transmitting mechanism between the motor and the laner, a controller for varying the speed of t e motor, and con-f nections from the controller for adjusting it, of means whereby the planer-dogs actuate the planer-reversing tumbler and the controller adjusting mechanism at difierent times whereby the controller becomes adj usted before and after the reversals of. planer motion and then adjust the controller to mo-f tor-quickening osition.

12. The com ination, substantially as set forth, with a planing-machine provided with an automatic reversing mechanism, a motor running continuously in one direction for actuating the planer, transmitting mechanism between the motor and the planer, a controller for. varying the speed of the motor, and connections between the controller and a part of the planer moving in unison with its table, of means for causin said connections to slow the table motion be ore reversal thereof and to quicken the table motion after the reversal thereof, and means independent for each dog for adjusting selectively the degree of said quickening whereby the continuouslyrunnin motor moves the table at speed decrease before reversal and at speed increaseed after reversal and whereby the table speeds after reversal ma be selectively different for the cutting and tile backing stroke.

- ADOLPH L. DE LEEUW. Witnesses:

E. B. SmrLEY, M- S. Barman. 

